Microsoft Power Point - Why Grounding Is Used
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Microsoft Power Point - Why Grounding Is Used as PDF for free.
More details
- Words: 1,887
- Pages: 50
PROFESSIONAL REGULATION COMMISSION BOARD OF ELECTRICAL ENGINEERING
Board Member
Jaime V. Mendoza, PEE, MTM
WHY GROUNDING IS USED?
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Will the bird on the high-voltage wire be shocked?
2
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Since current flow is necessary for electric shock, the bird is quite safe unless it simultaneously touches another wire with a different voltage.
I = (V1 – V2) / R
Electric current flow is proportional to voltage difference according to Ohm’s law, and both the bird’s feet are at the same voltage.
Will the bird on the high-voltage wire be shocked?
3
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
The helicopter make sure it doesn’t touch neighboring wires which are of different voltage.
Maintenance on a high voltage transmission lines is sometimes done with voltage “live” by working from a platform on a helicopter, sitting on the metal platform!
Want a scary Job?
4
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
For example: Earth Leakage Circuit Interrupter and Ground-Fault Circuit Interrupter
They are exactly the same thing, only different terms are used in different countries.
In Britain people have “earth” and in North America they have “ground”.
TERMINOLGY
5
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounded Conductor – A system of circuit conductor that is intentionally grounded.
Grounded – Connected to earth or to some conducting body that serves in place of the earth
Ground – A conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth.
TERMINOLGY
6
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounding Electrode Conductor – The conductor used to connect grounding electrode(s) to the equipment grounding conductor, to the grounded conductor, or to both, at the service, at each building or structure where supplied by a feeder(s) or branch circuit(s), or at the source of a separately derived system.
Grounded Electrode - A device that establishes an electrical connection to the earth.
Grounding Conductor – A conductor used to connect equipment or the grounded circuit of a wiring system to grounding electrode or electrodes.
TERMINOLGY
7
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Solidly Grounded – Connected to ground without inserting any resistor or impedance device.
Effectively Grounded – Intentionally connected to earth through a ground connection or connections of sufficiently low impedance and having sufficient current-carrying capacity to prevent the buildup of voltages that may result in undue hazards to connected equipment or to persons.
TERMINOLGY
8
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
GFCI – A device intended for the protection of personnel that functions to deenergize a circuit or portion thereof within an established period of time when a current to ground exceeds the values established for a device.
Equipment Grounding Conductor – The conductor used to connect the non-carrying metal parts of equipment, raceways, and the other enclosures to the system grounded conductor, the grounding electrode conductor, or both, at the service equipment or at the source of a separately derived system.
TERMINOLGY
9
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Facilitate overcurrent device operation in case of ground fault on a solidly grounded system.
Stabilize the voltage to ground during normal operations.
3. Unintentional contact with higher voltage lines
2. Line surges
1. Lightning
To limit voltage imposed by
Why Grounding is Used?
10
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Then the live wire touches the grounded case then the circuit is effectively shorted and fuse will immediately blow. When the fuse is blown then the dangerous voltage are eliminated.
When all the metallic parts of electrical equipments are grounded then if the insulation inside the equipment fails there are no dangerous voltages present in the equipment case.
The main reason why grounding is used in electrical distribution network is safety.
Grounding Operation in Electrical Distribution network
11
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
3. Drain leakage and static currents to ground helps reduce electrical noise.
2. Facilitate overcurrent device operation by establishing an effective ground-fault current path for the ground-fault current.
1. Limit voltage to ground.
Why Ground Noncurrent-Carrying Conductive Materials Enclosing Electrical Equipment?
12
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
EQUIPMENT GROUNDING
WHY GROUNDING IS USED!!!
Why Ground Noncurrent-Carrying Conductive Materials Enclosing Electrical Equipment?
13
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounding Operation in Electrical Distribution network
14
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
15
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
In the US, Black is the hot wire, white is the neutral or common wire and green is the equipment grounding.
Grounding in Wiring
16
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounding in Wiring
17
(for 3-phase) WHY GROUNDING IS USED!!!
black and black with white stripe
– brown
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
Live wire
Neutral wire – blue color
Ground wire – green wire with yellow stripe color
European Coloring
Grounding in Wiring
18
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
throughout the entire system WHY GROUNDING IS USED!!!
Color coding of phases must be consistent
Color Coding of Conductors
19
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
more yellow stripes. WHY GROUNDING IS USED!!!
or covered to show a green color or green with one or
Equipment grounding conductor up to No. 6 may be bare
Equipment Grounding Conductor for a branch circuit must be identified.
20
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
3. Wrapping the entire length of exposed insulation with green-colored tape or green-colored adhesive labels.
2. Painting the exposed insulation green for its entire length within the enclosure.
1. Stripping the insulation from an insulated conductor of another color (say black) for the entire length that is exposed on the box or other enclosure so that the conductor appear as a bare conductor.
But, for a grounding conductor larger than No. 6, an insulated conductor of other than green color or green with yellow stripes may be used provided one of the following steps is taken:
Equipment Grounding Conductor for a branch circuit must be identified.
21
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Transformer secondary neutral must be both grounded and bonded to the case
22
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Steps in grounding the transformer secondary neutral
23
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
be accomplished at either of two places.
Secondary neutral grounding and bonding may
24
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
be at least 8 ft of rod in contact with soil.
In a ground rod installation, there must
25
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Proper Installation of Grounding Rods
Installation of Grounding Rods
26
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
must be measured WHY GROUNDING IS USED!!!
Resistance to earth of a “made” electrode
27
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
Service Entrance Panel WHY GROUNDING IS USED!!!
Electrical Safety
28
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Equipment grounding block that is connected to the enclosure.
It is use of a bonding jumper from the neutral block to an
Neutral block to connect the block to the panel enclosure, or
Bonding is the insertion of a bonding screw into the panel
Equipment ground terminal must be ‘bonded” to the grounded conductor at the service equipment
29
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Equipment ground terminal must be ‘bonded” to the grounded conductor at the service equipment
30
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
“Common” grounding –electrode must be used for the service grounded conductor (neutral) and the equipment ground terminals.
31
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounded neutral must be brought into both sets of service equipment
32
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounded neutral must be brought into service entrance equipment even if it is not used for any circuits to loads.
33
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Main service bonding jumper must be within the service equipment
34
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
35
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
36
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
37
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
38
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Safety means no accidents
Electrical Safety
39
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Causes of Accident • Unsafe Conditions • Unsafe Acts
Accidents don’t just happen THEY ARE CAUSED !!!
Electrical Safety
40
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
STEP POTENTIAL
TOUCH POTENTIAL
Electrical Shock
41
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
3. Amount of Current through Body
2. Length of Time Current Flows
1. Path of Current through Body
Electric Shock Severity
42
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Electrical Safety
43
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
Manufacturing rules
Installation rules
Wiring design rules
WHY GROUNDING IS USED!!!
CLASSIFICATION OF CODE RULES
The primary objective of the code is to establish basic materials quality and electrical works standards for the safe use of electricity for light, heat, power, communications, signaling and for other purposes.
PURPOSE
THE PHILIPPINE ELECTRICAL CODE
Electrical Safety
44
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
a) Dwelling Units 1. Bathrooms 2. Garages 3. Outdoors 4. Crawl spaces at or below grade level 5. Unfinished basements 6. Kitchens for countertop appliances 7. Wet bar sinks
WHY GROUNDING IS USED!!!
PEC-1 (2.10.1.8) Ground Fault Circuit Interrupter for Personnel
Electrical Safety
45
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
GCFI CAN ELIMINATE THIS!
Electrical Safety
46
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
GROUND CIRCUIT FAULT INTERUPTER
Electrical Safety
47
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Ground Faults on Appliances
Electrical Safety
48
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
49
ERROR: stackunderflow OFFENDING COMMAND: ~ STACK:
Board Member
Jaime V. Mendoza, PEE, MTM
WHY GROUNDING IS USED?
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Will the bird on the high-voltage wire be shocked?
2
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Since current flow is necessary for electric shock, the bird is quite safe unless it simultaneously touches another wire with a different voltage.
I = (V1 – V2) / R
Electric current flow is proportional to voltage difference according to Ohm’s law, and both the bird’s feet are at the same voltage.
Will the bird on the high-voltage wire be shocked?
3
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
The helicopter make sure it doesn’t touch neighboring wires which are of different voltage.
Maintenance on a high voltage transmission lines is sometimes done with voltage “live” by working from a platform on a helicopter, sitting on the metal platform!
Want a scary Job?
4
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
For example: Earth Leakage Circuit Interrupter and Ground-Fault Circuit Interrupter
They are exactly the same thing, only different terms are used in different countries.
In Britain people have “earth” and in North America they have “ground”.
TERMINOLGY
5
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounded Conductor – A system of circuit conductor that is intentionally grounded.
Grounded – Connected to earth or to some conducting body that serves in place of the earth
Ground – A conducting connection, whether intentional or accidental, between an electrical circuit or equipment and the earth or to some conducting body that serves in place of the earth.
TERMINOLGY
6
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounding Electrode Conductor – The conductor used to connect grounding electrode(s) to the equipment grounding conductor, to the grounded conductor, or to both, at the service, at each building or structure where supplied by a feeder(s) or branch circuit(s), or at the source of a separately derived system.
Grounded Electrode - A device that establishes an electrical connection to the earth.
Grounding Conductor – A conductor used to connect equipment or the grounded circuit of a wiring system to grounding electrode or electrodes.
TERMINOLGY
7
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Solidly Grounded – Connected to ground without inserting any resistor or impedance device.
Effectively Grounded – Intentionally connected to earth through a ground connection or connections of sufficiently low impedance and having sufficient current-carrying capacity to prevent the buildup of voltages that may result in undue hazards to connected equipment or to persons.
TERMINOLGY
8
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
GFCI – A device intended for the protection of personnel that functions to deenergize a circuit or portion thereof within an established period of time when a current to ground exceeds the values established for a device.
Equipment Grounding Conductor – The conductor used to connect the non-carrying metal parts of equipment, raceways, and the other enclosures to the system grounded conductor, the grounding electrode conductor, or both, at the service equipment or at the source of a separately derived system.
TERMINOLGY
9
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Facilitate overcurrent device operation in case of ground fault on a solidly grounded system.
Stabilize the voltage to ground during normal operations.
3. Unintentional contact with higher voltage lines
2. Line surges
1. Lightning
To limit voltage imposed by
Why Grounding is Used?
10
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Then the live wire touches the grounded case then the circuit is effectively shorted and fuse will immediately blow. When the fuse is blown then the dangerous voltage are eliminated.
When all the metallic parts of electrical equipments are grounded then if the insulation inside the equipment fails there are no dangerous voltages present in the equipment case.
The main reason why grounding is used in electrical distribution network is safety.
Grounding Operation in Electrical Distribution network
11
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
3. Drain leakage and static currents to ground helps reduce electrical noise.
2. Facilitate overcurrent device operation by establishing an effective ground-fault current path for the ground-fault current.
1. Limit voltage to ground.
Why Ground Noncurrent-Carrying Conductive Materials Enclosing Electrical Equipment?
12
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
EQUIPMENT GROUNDING
WHY GROUNDING IS USED!!!
Why Ground Noncurrent-Carrying Conductive Materials Enclosing Electrical Equipment?
13
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounding Operation in Electrical Distribution network
14
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
15
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
In the US, Black is the hot wire, white is the neutral or common wire and green is the equipment grounding.
Grounding in Wiring
16
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounding in Wiring
17
(for 3-phase) WHY GROUNDING IS USED!!!
black and black with white stripe
– brown
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
Live wire
Neutral wire – blue color
Ground wire – green wire with yellow stripe color
European Coloring
Grounding in Wiring
18
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
throughout the entire system WHY GROUNDING IS USED!!!
Color coding of phases must be consistent
Color Coding of Conductors
19
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
more yellow stripes. WHY GROUNDING IS USED!!!
or covered to show a green color or green with one or
Equipment grounding conductor up to No. 6 may be bare
Equipment Grounding Conductor for a branch circuit must be identified.
20
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
3. Wrapping the entire length of exposed insulation with green-colored tape or green-colored adhesive labels.
2. Painting the exposed insulation green for its entire length within the enclosure.
1. Stripping the insulation from an insulated conductor of another color (say black) for the entire length that is exposed on the box or other enclosure so that the conductor appear as a bare conductor.
But, for a grounding conductor larger than No. 6, an insulated conductor of other than green color or green with yellow stripes may be used provided one of the following steps is taken:
Equipment Grounding Conductor for a branch circuit must be identified.
21
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Transformer secondary neutral must be both grounded and bonded to the case
22
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Steps in grounding the transformer secondary neutral
23
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
be accomplished at either of two places.
Secondary neutral grounding and bonding may
24
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
be at least 8 ft of rod in contact with soil.
In a ground rod installation, there must
25
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Proper Installation of Grounding Rods
Installation of Grounding Rods
26
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
must be measured WHY GROUNDING IS USED!!!
Resistance to earth of a “made” electrode
27
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
Service Entrance Panel WHY GROUNDING IS USED!!!
Electrical Safety
28
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Equipment grounding block that is connected to the enclosure.
It is use of a bonding jumper from the neutral block to an
Neutral block to connect the block to the panel enclosure, or
Bonding is the insertion of a bonding screw into the panel
Equipment ground terminal must be ‘bonded” to the grounded conductor at the service equipment
29
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Equipment ground terminal must be ‘bonded” to the grounded conductor at the service equipment
30
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
“Common” grounding –electrode must be used for the service grounded conductor (neutral) and the equipment ground terminals.
31
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounded neutral must be brought into both sets of service equipment
32
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Grounded neutral must be brought into service entrance equipment even if it is not used for any circuits to loads.
33
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Main service bonding jumper must be within the service equipment
34
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
35
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
36
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
37
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Pole-type service must be grounded at the load end of a service drop or lateral to a building
38
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Safety means no accidents
Electrical Safety
39
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Causes of Accident • Unsafe Conditions • Unsafe Acts
Accidents don’t just happen THEY ARE CAUSED !!!
Electrical Safety
40
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
STEP POTENTIAL
TOUCH POTENTIAL
Electrical Shock
41
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
3. Amount of Current through Body
2. Length of Time Current Flows
1. Path of Current through Body
Electric Shock Severity
42
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Electrical Safety
43
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
Manufacturing rules
Installation rules
Wiring design rules
WHY GROUNDING IS USED!!!
CLASSIFICATION OF CODE RULES
The primary objective of the code is to establish basic materials quality and electrical works standards for the safe use of electricity for light, heat, power, communications, signaling and for other purposes.
PURPOSE
THE PHILIPPINE ELECTRICAL CODE
Electrical Safety
44
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
a) Dwelling Units 1. Bathrooms 2. Garages 3. Outdoors 4. Crawl spaces at or below grade level 5. Unfinished basements 6. Kitchens for countertop appliances 7. Wet bar sinks
WHY GROUNDING IS USED!!!
PEC-1 (2.10.1.8) Ground Fault Circuit Interrupter for Personnel
Electrical Safety
45
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
GCFI CAN ELIMINATE THIS!
Electrical Safety
46
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
GROUND CIRCUIT FAULT INTERUPTER
Electrical Safety
47
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
Ground Faults on Appliances
Electrical Safety
48
PROFESSIONAL REGULATION COMMISSION Board of Electrical Engineering
WHY GROUNDING IS USED!!!
49
ERROR: stackunderflow OFFENDING COMMAND: ~ STACK:
Related Documents
Microsoft Power Point - Why Grounding Is Used
November 2019 4
Why Grounding Is Used
October 2019 21
Microsoft Power Point
June 2020 22
Microsoft Power Point - Leiva3
May 2020 19
Microsoft Power Point - Ostern
May 2020 24